SIERMAN Alex Moraru Signature Trombone Mouthpieces
Intro paragraph
Developed in collaboration with the SIERMAN factory, the Alex Moraru Signature Series was designed to provide an exceptional balance of response, flexibility, and orchestral sound. Created through extensive testing in professional orchestral settings, these mouthpieces focus on efficiency, tonal breadth, and comfort across all registers.
Rounded Rim Geometry
The slightly more rounded rim contour allows the lips to move naturally on the mouthpiece, making register transitions smoother while maintaining stability and comfort during long playing sessions.
Hybrid Cup Design
The internal cup profile blends characteristics of both V and bowl shapes, combining focus, projection, resonance, and fullness of tone.
Available Finishes
• Silver Plated
• Gold Plated
• Silver Plated with Gold Rim and Interior
Model Overview
M Series
The M model represents the most balanced concept of the series. With a 7.22 mm bore, it offers quick response, clarity of articulation, and a large resonant orchestral sound with natural brightness. This model is particularly suitable for principal orchestral playing and versatile professional use.
L Series
The L model features a slightly larger 7.30 mm bore, allowing greater airflow and producing a broader tonal footprint. It offers a darker tonal color, greater depth and weight, and a smooth, lyrical response.
Individual Models
M3
Cup diameter: 26.8 mm
Bore size: 7.22 mm
The most open and powerful option within the M series, ideal for maximum orchestral presence and projection.
M4
Cup diameter: 26.4 mm
Bore size: 7.22 mm
The most versatile option in the series, balancing comfort, control, and tonal breadth for a wide range of orchestral and solo repertoire.
M5
Cup diameter: 26.0 mm
Bore size: 7.22 mm
A slightly more compact rim diameter for increased precision and control, while maintaining the full orchestral and soloistic character of the M design.
L3
Cup diameter: 26.8 mm
Bore size: 7.30 mm
The largest and most powerful model of the L series, producing a broad, dark orchestral sound with exceptional depth and projection.
L4
Cup diameter: 26.4 mm
Bore size: 7.30 mm
A dark yet sweet tonal character that balances orchestral breadth with warmth and lyrical response.
L5
Cup diameter: 26.0 mm
Bore size: 7.30 mm
The most focused and intimate model of the L series, designed for a mellow, dark, and refined sound with smooth articulation and expressive flexibility.